Novel sound absorption material and structure for vehicle and manufacturing method thereof

A technology for sound-absorbing materials and vehicles, applied in chemical instruments and methods, vehicle parts, lamination, etc., can solve the problems of single application frequency range, difficult to master the preparation process, poor sound absorption effect, etc., and achieve excellent sound absorption effect, low production cost, and low environmental pollution

Inactive Publication Date: 2016-01-06
DANYANG YUSHENG TEXTILE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing noise-reducing and sound-absorbing materials, the application frequency range is relatively single. For example, if you want to have a better sound absorption effect in the middle and high frequency bands, the sound absorption effect in the middle and low frequency bands is poor, or vice versa.
Moreover, among the existing materials, it is easy to obtain better sound absorption effect in the middle and high frequency bands, but to obtain better sound absorption effect in the middle and low frequencies often requires more complicated measures or manufacturing techniques to achieve.
Moreover, in order to obtain a better sound absorption effect in the middle and low frequencies, the materials are often very thick, the structure is complex, or the production process is difficult to master.

Method used

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  • Novel sound absorption material and structure for vehicle and manufacturing method thereof
  • Novel sound absorption material and structure for vehicle and manufacturing method thereof
  • Novel sound absorption material and structure for vehicle and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] HXNBR and four-hole hollow polyester staple fiber are weighed according to the mass ratio of 80 / 20. First, HXNBR is kneaded on a double-roll mill at 30±5°C for 5 minutes to form a film with a relatively uniform thickness. Then add a certain amount of four-hole hollow polyester staple fiber to the film, lay it evenly, then fold the film to wrap the fiber inside, and then knead for 3 to 5 minutes, repeat this process until the weighed four Hollow polyester staple fiber is completely added and mixed evenly to obtain a HXNBR / four-hole hollow polyester staple fiber mixture; put the HXNBR / four-hole hollow polyester staple fiber mixture into a 1mm thick mold, and the upper and lower parts of the mold are 30cm×30cm thick The 3mm stainless steel plate is clamped, and a layer of anti-sticking high-temperature resistant PET film is placed between the mold and the steel plate, and then the installed steel plate is placed in a flat vulcanizer, preheated at 130°C for 5 minutes, and th...

Embodiment 2

[0028] HXNBR and single-hole hollow polyester staple fiber are weighed according to the mass ratio of 70 / 30. First, HXNBR is kneaded on a double-roll mill at 30±5°C for 5 minutes to form a film with a relatively uniform thickness. Then add a certain amount of single-hole hollow polyester staple fiber to the film, lay it evenly, then fold the film to wrap the fiber inside, and then knead for 3 to 5 minutes, repeat this process until the weighed single The hollow polyester staple fiber is completely added and mixed evenly to obtain the HXNBR / single-hole hollow polyester staple fiber mixture; put the HXNBR / single-hole hollow polyester staple fiber mixture into a 1mm thick mold, and the upper and lower parts of the mold are 30cm×30cm thick The 3mm stainless steel plate is clamped, and a layer of anti-sticking and high-temperature resistant PET film is placed between the mold and the steel plate, and then the installed steel plate is placed in a flat vulcanizer, preheated at 130°C f...

Embodiment 3

[0031] HXNBR and seven-hole hollow polyester staple fiber were weighed according to the mass ratio of 70 / 30. First, HXNBR was kneaded on a double-roll mill at 30±5°C for 5 minutes to form a film with a relatively uniform thickness. Then add a certain amount of seven-hole hollow polyester staple fiber to the film, lay it evenly, then fold the film to wrap the fiber inside, and then knead for 3 to 5 minutes, repeat this process until the weighed seven The hollow polyester staple fiber is completely added and mixed evenly to obtain the HXNBR / seven-hole hollow polyester staple fiber mixture; the HXNBR / seven-hole hollow polyester staple fiber mixture is put into a 1mm thick mold, and the mold is 30cm×30cm thick. The 3mm stainless steel plate is clamped, and a layer of anti-sticking and high-temperature resistant PET film is placed between the mold and the steel plate, and then the installed steel plate is placed in a flat vulcanizer, preheated at 130°C for 10 minutes, and then adjus...

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Abstract

The invention provides a novel sound absorption material and structure for a vehicle. The material is of two layers, wherein needle-punched nonwoven materials and hollow short fiber are located in one layer, and hydrogenated carboxyl nitrile rubber and hollow polyester staple fiber composite materials are arranged in the other layer. A manufacturing method of the novel sound absorption material and structure comprises the steps that an HXNBR base body is open-milled in a two-roller open mill to form a film, the weighed hollow polyester staple fiber is added to the film for several times, mixing is carried out, and an HXNBR-hollow polyester staple fiber mixed body is obtained; the evenly-mixed HXNBR-hollow polyester staple fiber mixed body is placed in a specific mold for compression molding on a press vulcanizer; after compression molding is finished and the molded body is taken out, the needle-punched nonwoven materials are placed into the HXNBR-hollow polyester staple fiber composite material, cooling is carried out, and then the novel sound absorption material and structure for the vehicle are obtained. According to the sound absorption material and structure for the vehicle, the manufacturing method is easy to implement, the materials are light and thin, the performance is excellent, the material sound absorption performance can be changed based on different using methods so as to achieve different application, and the thickness and performance of the manufactured material can be adjusted according to actual requirements.

Description

technical field [0001] The invention belongs to the fields of sound-absorbing material and its preparation, and vehicle application engineering, and in particular relates to a novel vehicle-used sound-absorbing material and structure and a preparation method thereof. Background technique [0002] With the improvement of living standards, people's requirements for the environment are getting higher and higher, and people pay more and more attention to the surrounding noise. However, in the existing noise-reducing and sound-absorbing materials, the application frequency range is relatively single. For example, if you want to have a better sound absorption effect in the middle and high frequency bands, the sound absorption effect in the middle and low frequency bands is poor, or vice versa. Moreover, among the existing materials, it is easy to obtain better sound absorption effect in the middle and high frequency bands, but to obtain better sound absorption effect in the middle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/12B32B27/36B32B37/02B32B37/10
CPCB32B5/022B32B9/02B32B27/12B32B27/36B32B37/02B32B37/10B32B2262/0276B32B2307/102B32B2605/08
Inventor 晏雄王新厚陈夕方张慧萍洪杰
Owner DANYANG YUSHENG TEXTILE NEW MATERIAL
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